Improvement in wood-working machines



@anni GEORGE DRYDEN, Ol" WORCESTER,v MASSACHUSETTS, ASSIG'NOR TO R.BALLAND COMPANY, OESAME PLACE.

Letters Patent No. 89,207, daad April 2o, 1869.

IMPROVEMENT IN WOOD-WORKIN Gr MACHINES.

The Schedule referred -to in these'Letters Patent and making part of thesame.

Know all men by these presents:

Figure 2 represents a central section of the same,` at line A B, tlg. 1;and

Figure 3 represents a plan view of the journal-box, with the cutter-headremoved.

To enable those skilled in the art to which my invention belongs, tomake and use the same, I will pro ceed to describe it more in detail'.

The nature of my invention consists- First, in the combination, with thespindle to which the cutter-head is vattached in matching and otherWood-working machines of a hollow spindle and pulley, cast in one piece,as hereinafter explained.

Second, in the combination, with the cutter-head in a matching, or otherwood-working machine, of a bisected spindle, the part-s of which areconstructed and combined together in the peculiar manner shown andhereafter described.

Third, in the combination, with the frame which supports thematcher-head spindle, of an oil-chamber and cap, as hereafter described.

In the drawings- The part indicated by letterAis the main frame of themachine, constructed in the usual manner.

To the cross-piece B is attached a frame, C, having a` journal-box, D,and a step-bearing, E, in which are supported and turn the hollowspindle F and pulley G.

The pulley G and spindle F are cast in one piece, and cored out hollow,the pulley as indicated by red lines, lig. 2.

`The cutter-head H is secured, by a set-screw, a, to the top end of abisected spindle, L M, which passes through the hollow spindle F andpulley G, with-its lower end resting on the step E.

The top part L of the bisected'spindle is turned -with a tapering stemN, which fits into a corresponding shaped hole in the lower part M,where it is se cured by a set-screw, b, which screw also secures thebisected spindle in the hollow spindle F.

An opening, c, is formed through the part M in which to insert a leverfor starting out the stem N.

The extreme end, fm, of the stem N, that extends into the slot, oropening c, is made tlat to lit the same,

thus preventing the parts M and L from turning separately. v f

The cutterhead may be adjusted .at diierent heights by the screw cl inits top.

A semicircular groove, f, is formed in the top of the journal-box D, orframe G, from which holes communicate with the bearing part whichsupports the upper part F of the hollow spindle.

The groove f is to be iilled with cotton-waste and i oil, the latterbeing gradually drawn, or conveyed to the bearing, for lubricating thesame. i

A sliding cover, K, is arranged above the groove f,

. to protect and shield the waste and oil from chips and dust.

The sliding coveris retained in place by a setscrew, t.

In using machines simply for surface-planing,l it is sometimes desirableto remove the matchers, or ver'- tical cutterheads, and the object of myinvention is to furnish a device by which it can be done in a moreconvenient manner than heretofore:

To remove the cutter-head, the set-screw b is loosened, when thecutter-head H and spindle L M can be lifted out, while the pulley G andhollow spindle F still remain in position.

The cover K is moved over the opening in the spindle F, therebypreventing chips and dirt from falling in.

The spindle L M may be made whole, thatv is, in one piece, if preferred,when the combined hollow spindle F and pulley G areuscd, and I proposeto adopt such construction in the manufacture of new machines, but inmachines already built, I'shall use the bisected spindle L M, the lowerend of which is made dat, as. shown at m, in which casev the cutterheadwould be removed, by simply removing the part L.

Ihe driving-pulley being attached, in this instance, to the part M, willremain in proper position to support the belt, the same as in the formercase.

By casting the spindle F and pulley G in a single piece, and coring' outsuch parts for the reception of the removable spindle, the manufactureof the machine is greatly facilitated, while, at the same' time, it isrendered more durable.

Then, again, by the use of the cast-iron spindle F, thercutter-head hasless vibration than in the old machiues, thereby producing better work.

lhe attened end m of the`part L, lit-ting, as it does, closely into theslot c, in the part M, obviates an objection to' the use of spindleswith screws on their lower ends, which are liable to unscrew when theheads are turned back for any purpose.

Having described my improvements in wood-working machines,

What I claim therein as new, and of my invention, M, said parts beingconstructed substantiallyas shown and desire to secure by LettersPatent, is and described.-

1. The upper part L and lower part M of the di- 3. The combination withthe frame C, vor journalvided spindle, and the set-screw I, when saidparts box D ofthe oil-chamber, with its sliding cap K, subareconstructed md arranged for joint operation, as stzmtiztlly :is :md forthe purposes Set forth.

shown and described. Witnesses: GEORGE DRYDEN.

2. The hollow spindle F and pulley G, formed, or THos. H. DODGE,

cast in one piece, in combination with thel spindle L GEO. H. MILLER.

